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情態動詞can和could

2023-07-01

第一篇:情態動詞can和could

英語語法教學微課教案(情態動詞can和could)

一、Teaching Content: Topic:Unit 5 Can you play the guitar? Grammar:Using “can”/ “could” to talk about ability

二、Teaching Aims: 1.Use can talk about the ability at present. 2.Use could talk about ability in the past.

三、Teaching Key and Difficult Points: How to use “can” and “could” to express ability in the present and past.

四、Teaching Methods: Task-Based Language Teaching Method

五、Teaching Procedures: Step 1:Warming up

Task 1: Revision T: What can you do now? S1: I can sing. S2: I can draw S3: I can dance. T: Can you ride a bike / swim / fly a kite / play football / play chess? Ss:Yes , I can. / No, I can’t.

Task 2: Playing a game T: Now let us play a game. Five students come to the front and perform for to my instructions.and gestures.The others answer my questions. T : What can she do? Ss : She can ride a bike /swim/ fly a kite/ play football / play chess . T: Can she swim/ fly a kite/play football /play chess. Ss: Yes ,She can? No, she can’t. T: Say the whole sentences: eg: A can ride a bike. He can’t / cannot swim. Step 2: Presentation T: Can you ride a bike now? S1:Yes. I can T:Could you ride a bike five years ago ?

Yes, I could./ No, I couldn’t ( Help him answer) S1:Yes, I could./ No, I couldn’t. T: we can use “could” t talk about the past

.e.g I can play computer now .But, last year I couldn’t play. T: Could you row a boat last year? S1:Yes I could . No, I couldn’t.

T: Could she he row a boat last year?( Ask other students) Ss: Yes she he could . No she he couldn’t T:Yes , A could ride a bike five years ago. He couldn’t swim five years ago.

the class according (Teach the students to say the whole sentences): A could ride a bike five years ago. He couldn’t swim five years ago.) (Ask other students in the same ways) Step 3: Practice :work in pairs T: Ask your partner more questions eg: Could he / she …?

(Yes, he / she could. / No, he / she couldn’t.) ... Step 4: Production Task 3: Explanation T: Let’s work out the rule.

① 肯定句式: can could

② 否定句式: can’t couldn’t

③ 疑問句式: Can „?Could „?

T: We can use “am (is , are) able to “ instead of “can”,and “was (were) able to “ instead of “could“.

eg.①Mike can sing more than 20 English songs.

Mike is able to …

②She could speak English when she was four. She was able to…

T: Please give more examples.to practice them. Step 5: Summary T:In this class, we have learnt the use of can and could about talking about abilities .Who knows the differences between “can” and “could” Step 6: Homework Finish off the practice on the workbooks ,Fill in the blank with can/could

第二篇:情態動詞can的教學反思

教學的方式要以教學的任務和內容、學生的年齡特點和心理需求,靈活多變地加以應用。小學生容易注意力不集中,為了引起學生的注意力并激發學生的學習積極性,在教學情態動詞can 的時候,教師畫出下列簡筆畫:

我邊畫簡筆畫邊說: I can do a lot of things. What can I do? Do you want to know. Let me tell you. I can play table tennis.(畫出第一幅圖示并鼓勵學生說出動詞短語:play table tennis) . I can play the piano.(畫出第二幅圖示并鼓勵學生說出動詞短語play the piano). I can stand on my head.(畫出第三幅圖示并鼓勵學生說出動詞短語stand on my head). 然后我叫了五位學生,讓他們做動作來告訴大家。我又問:What can he /she do? 讓他們說出:I can…….引出另外五個短語:play football, swim, roller blade, ski,ride a horse.接著讓學生根椐學過的動詞短語用句型Ican ….I cannot….個自寫出自己會做的事情和不會做的事情. 然后讓學生利用句型:What can I do? Can you…? Yes, I can.或No I can’t. 互猜彼此會做的事情和不會做的事情。這樣可以讓學生所學語言產生興趣,從而激發學生的學習欲望調動學生的學習積極性。

這樣通過大量的、反復的、多種形式的操練,要求學生在量中求質,在速度中求準確。

我認為,為了有效地利用練習的時間,提高練習的效率,教師在組織練習時,要分秒必爭,爭取在有限的時間內,加大練習的強度和密度。

第三篇:情態動詞只有情態意義

情態動詞只有情態意義,即它所表示的是說話人對動作的觀點,如需要、可能、意愿或懷疑等。

情態動詞的特征:

1.在形式上,情態動詞沒有實義動詞的各種變化。

2.在意義上,大多數情態動詞有多個意義。

3.在用法上,情態動詞與助動詞一樣,須后接動詞原形。

情態動詞各自的基本意義及用法

一、can 與could用法對比表

對比點 can could

1、表“能力” Can you lift this heavy box? I couldn’t understand what he said at all.

2、表“許可” You can use a different material instead. He said I could borrow his bike.

3、“懷疑” No, no, it can’t be true.

What on earth can this mean? We thought the story could not be true. How could you be so careless?

4、can與be able to 區別 1. could代替 can,表示語氣更為婉轉。

Eg. Could I use your bike? Yes, you can.

2. can (能夠)=be able to(僅表能力時),但be able to 表示一番努力后,才能做得到,且有更多的時態。

He was a good swimmer, so he __________ swim to the river bank when the boat sank.

A. could B. might C. shall D. was able to

二、may與 might用法對比表

對比點 may Might

1.表“詢問” May I „?(=Can I „?) Might I „?(=Could I„?)(但比用may 更客氣) 1

2.表“允許” You may take the boy there. He told me he might come .(might 與told相呼應)

3.表“可能”“或許” She may nor like this place. I’m afraid he might not like this play.

注: 1. May I„?的答語。

2.may可表示期望或祝愿

May you succeed !

3.may (might)用于目的狀語從句中 肯定:Yes, you may.

否定:No, you mustn’t 不行(語氣強硬)

No, you may not 或No, you’d better not.

The emperor gave them some gold in order that they might begin their work at once.

三、must與have to的用法對比表

對比點 must have to

1.表“必須” (主觀看法)必須;沒有過去式,可用于間接引語中。He told me I must do according to what he said. (客觀需要)不得不,有多種時態。It’s raining heavily, we can’t go now.

2.疑問句 Must I „?

Yes, you must.(一定)

No, you needn’t./ you don’t have to.(不必) Do you have to go today?

Yes, we do.

否定句:You don’t have to worry about that.

四、need與dare的用法對比表

對比點 need dare

1.情態動詞+動詞原形

1)否定式

2)疑問式 He need not (needn’t)go.

----Need we do it again?

---No, you needn’t do it again. He dare not say so. 2

Dare she go out alone at night?

How dare you say I’m unfair?

If he dare do that, he’ll be punished.(條件句)

I dare say.(固定用法)

2.行為動詞+帶to不定式

1)肯定式

2)否定式

3)疑問式 He needs to go.

He doesn’t (does not)need to go.

Does he need to do it again?

No, he doesn’t need ot do it again. He dares to say.

He does not(doesn’t)dare to say.

If you dare to jump into the water from here, so dare I .

3. did not need to do

表示過去沒有必要做 She didn’t need to attend the meeting yesterday, and she stayed with her children.(她沒有參加)

五、should與ought to用法對比表

對比點 should ought to

1、表“應該” 表勸告、建議

You should listen to the doctor’s advice.

We should learn from Zhang Hua 表示“有責任有必要”做某事

You ought to finish your work before you go home.

We ought to help each other.

2、表“估計”

They should get home by now. 表示“非??赡?rdquo;的事,可譯為“總應該”

If we start to work right now, we ought to finish it before lunch.(午飯前應當能干完)

注: 1)、should還可在虛擬語氣中的使用

2). 注意:ought to的疑問式及否定式

----Ought he to go? ----Yes, I think he ought to.

No, he oughtn’t to.

否定式:ought not to a或oughtn’t to do(不說ought to not do)

反疑問句:oughtn’t ______?

六、shall與will的用法對比表

shall Will

1. 征詢對方意見或請求指示,用于第

一、三人稱:

Shall I (we)„?

Shall he (she)„? Where shall I (we)wait for you? 1. 詢問對方的意思或向對方提出要求:

Will you(please)„? Won’t you„?

Would you like to„?(用would替代will更客氣)

----Won’t you go and see the film?你不去看電影嗎?---Yes, I think I will. 不, 我想去。

2. 表示說話人的“意愿”有“命令”“警告”“強制”“允諾”“決心”等,用于第

二、三人稱,要重讀。

You shall do what I tell you ( to do).

我叫你干什么你就干什么。

Everything shall be done to save the ship.

一定要竭盡全力來拯救這艘船。 表示“意志”“意愿”,用于各種人稱:

I won’t do anything you don’t like.

我不會做任何你不喜歡的事。

Would表示過去時間的“意志”“意愿”

Shylock would not take the money earlier.

夏洛克先前是不肯要錢的。

七:used to與would用法對比表

used to would

1.表示過去的動作、狀態,重在與現在情況的對比,不一定要有時間狀語。

I used to play cards a lot, but now I seldom play. 4

My hometown is not what it used to be. 1.只表示過去動作的重復,有明確的時間狀語

I would go to see my grandfather on Sunday when he was in the middle school.

2.would 后只接表動作的動詞,不接表認識或狀態動詞

He used to be nervous in the exam.

2.表示過去的習慣有時可互換:

When we were very young, we used to / would go skating every winter.

2. 表示過去的次數時,不能使用:

( √)We went to the Great Wall five times when we were young.

( X ) We used to go / would go to the Great Wall five times when we were young.

注:used to do的否定式:usedn’t to do 或didn’t use to do (usedn’t也可寫作usen’t)

疑問式: Did you use to do ? Didn’t you use to do?

Used you to do? Usedn’t you to do?

情態動詞表推測

情態動詞表推測的意義:

1、大多數情態動詞(除表‘能力、許可、意志’外),都可以表示推測,其程度有差異。按其可能性程度的高低排列為: Must ﹥will ﹥would ﹥ought to ﹥ should ﹥ can ﹥ could﹥ may ﹥ might

肯定 完全可能 很可能 可能 有可能

2.注意區分情態動詞的否定的含義:

may not或許不、可能不 might not可能不 can’t 不可能

mustn’t不許、禁止 shouldn’t不應該 needn’t 不必

3.情態動詞表推測具體運用:情態動詞可以對現在、進行、過去推測

S主+情態動詞+be+adj 對“性質”“特征”的推測

S主+情態動詞+be+n 對“職業”“事物”的推測

S主+情態動詞+V原 對經常性行為的推測

S主+情態動詞+be+V-ing 對進行著的行為的推測

S主+情態動詞+have+PP 對過去的行為的推測

特別提醒:情態動詞表推測時

1、 can只能用于否定句和疑問句

2、 must只能用于肯定句(它的否定句和疑問句其實就用can來代替了)

3、 如句中有情態動詞 + 完成時,定是對過去的推測 。

4、 句中如有表示不肯定的話語,如:I am not sure; I don’t know 之類,常選may /might的各種形式

4. 記住下面幾組表示反勸的特殊的表推測的形式

1). could + have + PP表示本來能做到,但事實上沒有做到。 He could have finished the task on time, but the heavy snow came.

2). couldn’t +have + PP表示本來不能做到,但已經做到了。 She could not have covered the whole distance, but in fact she arrived ahead of time.

3) needn’t + have + pp表示本不必做的,但已經做到了。 She needn’t have attended the meeting yesterday, but she did.

4.) should/ought to +have + PP表示 該做而沒有做 The plant is dead. I should/ought to have given ot more water.

5) shouldn’t/ oughtn’t to +have + PP表示 不該做而做了。 You oughtn’t to / shouldn’t have taken her bike without permission.

5. 記住下面對比:

must只能用于肯定句(它的否定句和疑問句其實就用can來代替了)

1.must + have + PP 表示對過去肯定的推測,譯為“一定是,準是” The road is wet. It must have rained yesterday.

2.can + have + PP 表示對過去的推測(限于問句中) Can she have said so? 他可能這樣說嗎?

3.can’t + have + PP 表示對過去的否定推測 He cannot have said such a foolish thing.

情態動詞表推測的反意疑問句

情態動詞表推測的反意疑問句,簡單來說,就是以情態動詞后的時態為淮,如句子里有明確的時間狀語,則以其為準。以 must 為例:

eg. 1. You must be hungry now, aren’t you?

2. He must be watching TV , isn’t he ?

3 Tom must have lived her for a long time, hasn’t he ?

4. She must have arrived yesterday, didn’t she?

注:如選擇題中(以She must have arrived yesterday, didn’t she?為例)既有didn’t she又有hasn’t she則以didn’t she?為最佳答案

第四篇:情態動詞專項

1.can

①(表能力)能…,會…

She can drive, but she can’t ride a bike.

A computer can’t think for itself.(不會思考)

②(可能,許可)能夠…,可以…

The noise outside has stopped , now I can get down to my study.

--Can I use your telephone? --Yes, of course, you can.

You can go out to play when you do away with your homework.

③有時會…,偶爾…,

The climate of East China can be pretty cold in winter.

Jogging can be harmful for the health.

Even experienced teachers can make mistakes.

London could be rather cold in summer while I stayed there.

④(表溫和的命令)請做…,得…

I’ll do the cooking, and you can do the washing.(請你去洗衣服)

You can go now.

⑤(表示猜測)可能…

Can he be working till so late?

Who can it be at this time of day?

Can it be Tom? No, it can’t be Tom.

He is busy these days, so he can’t come today.

can 與be able to 的區別:

The fire spread through the hotel very quickly, but everyone was able to get out.(強調設法干成某事)

2.shall

?用于一三人稱的問句中,表示征求對方的意見

Shall I shut the window? Yes, please.

Shall she go to the concert with us this evening?

Shall they come in?

Shall we go out for a walk?

?用于二三人稱 ,表示命令,允諾,警告,威脅,強制

①You shall go to the front at once.(命令)

②Don’t worry .You shall get the answer this afternoon.(允諾)

③I promise she shall get a nice present on her birthday. (允諾)

④He shall be punished. 威脅

⑤You shall listen to me. (命令)

⑥The interest(利益利潤)shall be divided into five parts, according to the agreement made by both sides. (命令法規)

⑦It has been announced that candidates(候選人) shall remain in their seats until all the papers have been collected.(表按規定)

3.must

?必須

I must keep my word.

You must get up much earlier.

?不必needn’t/don’t have to

--Must I wash the dishes at once?

-- No, you needn’t./don’t have to.

?mustn’t 禁止,不許

You mustn’t play with the knife.

Cars mustn’t be parked here.

--May I use your pen?

--No, you mustn’t

?(表必然性)必定

Everyone must die.

?(表固執,不滿等)偏要硬要

Our there-year-old boy must do the opposite to what we ordered.

Just when I was busy, the neighbor must come and chat.

Why must you be so stubborn(倔強的)?

If you must know, I’m going to help him look for an apartment.

4. should

? 應該

You should apologize to him.

We should attend the meeting.

? (表預期)按理會…, 想必會…,一定會…

The concert should be great fun.

The photos should be ready by 12:00.

The old man is always hunting the lions, so terrible things should happen to him. ? (表驚訝,遺憾)竟然居然

I’m glad that your story should speak in such a way.

I wonder that a person like him should make such a mistake.

It’s a pity that he should resign.

? (用于條件狀語從句中)一旦,萬一

If she should know the truth, she would be depressed.

If you should change your mind, let us know.

Ask him to call me up if you should see him.

? (用于lest, for fear that, in case引導的句子)以免,唯恐

She gave me a list just in case I should forget what to buy.

He ran away lest he should be caught.

He gets up early for fear that he should miss it.

5. would

①(表過去的習慣行為)常常經常

When I was a child, I would often go skiing.

We would stay up all night talking about our future.

Every morninghe would go for a walk.

When he was here, he would go to that coffee shop at the corner after work everyday. 區別used to do sth過去常常

I use to be a waiter, but now a taxi driver.

There used to be a cinema here before the war.

Our country isn’t what it used to be.

②(表示說話者的厭煩焦躁)老是偏要

That’s exactly like Susie. She would come to me just when I was busy.

(老是在我忙碌時來找我)

I told him not to go, but he would not listen.(可他偏不聽)

③ (用于if 從句)愿意樂意

If you would go there instead of me, I should be very glad.

如果你愿意代替我去那兒,我會很高興的。

You could win if you would try要是你愿意嘗試, 你會贏的

④ (用于否定句中,主語一般是事物,表某事物暫時的特性)就是不能 That window wouldn’t open.

That morning my car wouldn’t start.

When I called on him this morning, his dog wouldn’t let me in.

The door won’t open.

The car won’t start.

The doctor knows I won’t be operated on.

⑤ (表示推測)大概,大約

That would be his father .那大概設他父親。

You would be about 10 years old then.你那時大概10歲。

It would be about ten when they left.

I thought she would have told you about it.

6.需特別注意:

①may well do sth =be very likely to do sth(很可能,完全能)

may as well do sth = had better do sth

② would like to have done

= would love to have done

= was/were to have done(本來想做…,本來打算做…)

③ had better have done sth(當時已做了…就好了)

④ must have done sth(肯定干過某事)

⑤ can have done sth可能已干過…

can’t have done sth不可能干過…,肯定沒干過…

⑥could have done sth本來能夠干 …,可能已干過…

⑦ may /might have done sth也許已經干過…,

⑧should have done sth

=ought to have done sth本來應該干…

⑨needn’t have done sth本不必做…

⑩would rather have done sth寧愿干過…

would rather not have done sth寧愿沒干過…

好成績是練出來的:

1.A left –luggage office is a place where bags ____ be left for a short time , especially at a railway station.

A shouldB canC must D will

2.How ___ you say that you really understand the whole story if you have covered only part of the article?

A canB mustC needD may

3.--There’s no light on.

--they ___ be at home.

A can’tB mustn’tC needn’tD shouldn’t

4.Some aspects of a pilots job ___ be boring ,and pilots often ___ work at in convenient hours.

A can, have toB may, canC have to, mayD ought to, must

5.He didn’t agree with me at first, but I ____ persuade him to sign the agreement later.

A couldB mightC ought to Dwas able to

6.If I ____ plan to do anything I wanted to, I’d like to go to Tibet and…

A wouldB couldC had toD ought to

7.The World Web is sometimes jokingly called the World Walt because it ___ be very slow.

A shouldB mustC will D can.

8.—Is Jack on duty today?

--It ___ be him. It’s his turn tomorrow.

A can’tB mustn’tC needn’tD won’t

9.I____ have been more than six years old when the accident happened.

A couldn’tB mustn’tC needn’tD shouldn’t

10.—I have taken someone else’s green sweater by mistake.

--It ___ Harry’s. He always wears green.

A has toB will beC must beD could be

11.You ____ be tired , you have only been working for an hour.

A can’tB mustn’tC may notD won’t

12.—Do you know where David is ?I couldn’t find him anywhere.

-- Well, he ___ have gone far. His coat is still here.

A can’tB mustn’tC may notD won’t

13.—Can I pay the bill by check?

-- Sorry, sir. But it is the payment shall be made in cash.

A shallB mustC will D can.

14.—Could I have a word with you, mum?

-- Oh, dear, if you ____.

A shouldB mustC may D can.

15.Naturally, after I told her what to do, my daughter ___ go and do the opposite.

A shouldB mustC may D can.

16.—Who is the girl standing over there?

--Well, if you ___ know, her name is Mabel.

A shallB mustC may D can.

17.John, look at the time.___ you play the piano at such a late hour?

A NeedB MustC May D Can.

18._____ you need any help, you can phone me at the office.

A WouldB ShouldC CouldD Had

19.—I’m afraid I will be too busy to go with you.

--Well, I’ll keep a seat for you in case you ___ change your mind.

A shouldB mayC will D can.

20.If anything __ happen to me, please give this letter to my head teacher.

A couldB mustC wouldD should

21.There is a real possibility that these animals could be frightened, ____ a sudden loud noise.

A being thereB should there beC there wasD there having been

22.—When can I come for the photos? I need them tomorrow afternoon.

-- They ___ be ready by 12:00.

A shouldB mightC need D can.

23.It’s nearly seven o’clock. Jack ___ be here at any moment.

A shouldB mustC need D can.

班級________姓名_____________

1-5 ___________________2-10___________________11-15_________________

16-20__________________21-23_______

第五篇:高三情態動詞專項

1.Some people who don’t like to talk much are not necessarily shy;they___ just be quiet people.

A.must B.may C.should D.would

2.—Why____you be talking so loudly while others are studying?

–--I am terribly sorry.A.shall B.must C.will D.may

3.—Where will you start your work after graduation?

—Um,it’s not been decided yet.I_____continue my study for a higher degree.

A.must B.need C.would D.might

4.--___it be Tom that stole the manager’s mobile phone?

---No,as far as I know,Tom is very honest.A.May B.Can C.Must D.Should

5.Traffic safety is so important that everyone___take safety measures too seriously.

A.shouldn’t B.mustn’t C.cannot D.won’t

6.Peter____be really difficult at times even though he’s a nice person in general.

A.shall B.should C.can D.must

7.You can’t imagine that a well-behaved gentleman_____be so rude to a lady.

A.might B.need C.should D.would

8.---The work will take me another week.I’m really tired.

—I think you___ as well go to ask an experienced worker for some advice. A.may B.can C.need D.must

9.—That must be a mistake.

—No,it_____a mistake.A.must not beB.needn’t be C.cannot be D.would not be

10.He was a good runner so he__ escape from the police. A.might B.succeeded to C.would D.was able to

11.A dog ran in front of my mother’s car and she___ stop very quickly.

A.ought to B.had better C.must D.had to

12.I didn’t hear the phone.I____asleep.A.must be B.should be C.must have been D.should have been

13.---I saw Mr Sun at Tongyu Station this morning.

—You____.He’s still on holiday in Hawaii.

A.couldn’t have B.mustn’t have C.shouldn’t D.needn’t

14.--What has happened to George?

—I don’t know.He____lost.

A.can have got B.may have got C.might get D.could get

15.Many people___to his home as he keeps a big dog.

A.not dare go B.dare not go C.not dare to go D.dare not to go

16.I don’t think he could have done so much homework last night,____?

A.do I B.could he C.has he D.did he

17.You ___late for yesterday’s class meeting,as it was so important.

A.couldn’t be B.shouldn’ t beC.mustn’t have been D.oughtn’t to have been

18.—The Chinese athletes did extremely well in the Olympics.

—Yes,they____well,or they____ such great achievement.

A.must have been trained;couldn’t have gotB.must have trained;could have got

C.must have been trained;mustn’t have gotD.should have trained;couldn’t have got

19.As you know,although there are no classes on weekends now,no students___go out of the schoolwithout the headteacher’s permission.A.will B.must C.may D.shall

20.Many women___ a good salary,but they chose to stay at home for the family.

A.must make B.must have made C.should make D.could have made

21.—Why hasn’t Mr.Green showed up at the meeting yet?

—I’m not sure,but he___ in a traffic jam driving here.

A.could be caughtB.might be caughtC.might have been caught D.must have caught

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